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It is the standard USB ten keyboard that is optimal for use with a laptop computer.
Equipped with a convenient [Tab] key for working in Excel and a convenient  key for entering numbers.
Input efficiency improves with large keys. "NumLock" problem is solved by hardware, installation of countermeasure software is unnecessary. Equipped with an LED lamp that shows NumLock on / off status at a glance.
Since it is a USB connection, plugging in and out is possible even when the PC's power is on. It is unnecessary to install the special driver etc., you can use it immediately by connecting to the USB port of the personal computer.
We adopt a strong key that can withstand up to 10 million keystrokes.
■ Interface: USB ■ Connector shape: USB [A] ■ Compatible model: Windows PC equipped with USB interface ■ Supported OS: Windows 8 to 8.1, Windows RT to RT 8.1, Windows 7 (SP 1), Windows Vista (SP 2) , Windows XP (SP3) ■ Color: Black ■ Key type: Membrane ■ Key arrangement: 20 keys ■ Key pitch: 19 mm ■ Key stroke: 2.3 mm ■ Power supply system: USB bus power ■ Cable length: 0.5m ■ Dimensions: Width 90 × depth 140 × height 23.5 mm (excluding cable) Weight ■: about 110 g
ELECOM Numeric Keypad Portable USB keypad TK-TCM011BK Black - B00HL8Z6KS